How to remove this white line?

[kingston123]

I successfully completed the diagram:

But How to remove this white line (which I marked in the diagram)?

 

[MrCATIA]

Congratulations Kingston - your model looks pretty good. But I suggest you add R3mm fillets on all the internal edges to strengthen the part.


I see yellow H and V axis also, so the white line is probably a sketch. Right-click on the sketch and Delete will remove it, unless it's a parent to another feature. If it is a parent, then just Hide the sketch. Hide those 3 primary planes also.